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Objective:To develop a no-reference image quality assessment method using automated distortion recognition to boost MRI-guided radiotherapy precision.Methods:We analyzed 106,000 MR images from 10 patients with liver metastasis,captured with…

图像与视频处理 · 电气工程与系统科学 2024-12-11 Zilin Wang , Shengqi Chen , Jianrong Dai , Shirui Qin , Ying Cao , Ruiao Zhao , Guohua Wu , Yuan Tang , Jiayun Chen

In multimedia broadcasting, no-reference image quality assessment (NR-IQA) is used to indicate the user-perceived quality of experience (QoE) and to support intelligent data transmission while optimizing user experience. This paper proposes…

图像与视频处理 · 电气工程与系统科学 2024-12-11 Qiang Qu , Xiaoming Chen , Vera Chung , Zhibo Chen

No-reference image quality assessment (NR-IQA) aims to simulate the process of perceiving image quality aligned with subjective human perception. However, existing NR-IQA methods either focus on global representations that leads to limited…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Chenyue Song , Chen Hui , Haiqi Zhu , Feng Jiang , Yachun Mi , Wei Zhang , Shaohui Liu

Full-reference image quality assessment (FR-IQA) models generally operate by measuring the visual differences between a degraded image and its reference. However, existing FR-IQA models including both the classical ones (eg, PSNR and SSIM)…

计算机视觉与模式识别 · 计算机科学 2024-08-20 Kang Xiao , Xu Wang , Yulin He , Baoliang Chen , Xuelin Shen

One major problem of objective Image Quality Assessment (IQA) methods is the lack of linearity of their quality estimates with respect to scores expressed by human subjects. For this reason, usually IQA metrics undergo a calibration process…

计算机视觉与模式识别 · 计算机科学 2022-05-25 Elio D. Di Claudio , Paolo Giannitrapani , Giovanni Jacovitti

The goal of No-Reference Image Quality Assessment (NR-IQA) is to predict the perceptual quality of an image in line with its subjective evaluation. To put the NR-IQA models into practice, it is essential to study their potential loopholes…

计算机视觉与模式识别 · 计算机科学 2024-02-29 Yu Ran , Ao-Xiang Zhang , Mingjie Li , Weixuan Tang , Yuan-Gen Wang

Due to the existence of quality degradations introduced in various stages of visual signal acquisition, compression, transmission and display, image quality assessment (IQA) plays a vital role in image-based applications. According to…

图像与视频处理 · 电气工程与系统科学 2022-04-14 Dongxu Wang

The goal of full-reference image quality assessment (FR-IQA) is to predict the quality of an image as perceived by human observers with using its pristine, reference counterpart. In this study, we explore a novel, combined approach which…

计算机视觉与模式识别 · 计算机科学 2020-12-04 Domonkos Varga

A long-held challenge in no-reference image quality assessment (NR-IQA) learning from human subjective perception is the lack of objective generalization to unseen natural distortions. To address this, we integrate a novel Depth-Guided…

计算机视觉与模式识别 · 计算机科学 2025-06-02 Vaishnav Ramesh , Junliang Liu , Haining Wang , Md Jahidul Islam

Deep neural networks have demonstrated impressive success in No-Reference Image Quality Assessment (NR-IQA). However, recent researches highlight the vulnerability of NR-IQA models to subtle adversarial perturbations, leading to…

图像与视频处理 · 电气工程与系统科学 2024-04-25 Chenxi Yang , Yujia Liu , Dingquan Li , Yan Zhong , Tingting Jiang

Image quality assessment (IQA) aims to estimate human perception based image visual quality. Although existing deep neural networks (DNNs) have shown significant effectiveness for tackling the IQA problem, it still needs to improve the…

图像与视频处理 · 电气工程与系统科学 2020-12-04 Wei Zhou , Zhibo Chen

No-Reference Image Quality Assessment (NR-IQA) aims to estimate perceptual quality without access to a reference image of pristine quality. Learning an NR-IQA model faces a fundamental bottleneck: its need for a large number of costly human…

计算机视觉与模式识别 · 计算机科学 2026-03-18 Mahdi Naseri , Zhou Wang

Full-reference (FR) image quality assessment (IQA) evaluates the visual quality of a distorted image by measuring its perceptual difference with pristine-quality reference, and has been widely used in low-level vision tasks. Pairwise…

计算机视觉与模式识别 · 计算机科学 2022-04-20 Yue Cao , Zhaolin Wan , Dongwei Ren , Zifei Yan , Wangmeng Zuo

Image quality assessment is a fundamental problem in the field of image processing, and due to the lack of reference images in most practical scenarios, no-reference image quality assessment (NR-IQA), has gained increasing attention…

计算机视觉与模式识别 · 计算机科学 2023-05-17 Jinsong Shi , Pan Gao , Aljosa Smolic

New multinuclear MRI techniques, such as sodium MRI, generally suffer from low image quality due to an inherently low signal. Postprocessing methods, such as image denoising, have been developed for image enhancement. However, the…

Most modern No-Reference Image-Quality Assessment (NR-IQA) metrics are based on neural networks vulnerable to adversarial attacks. Attacks on such metrics lead to incorrect image/video quality predictions, which poses significant risks,…

图像与视频处理 · 电气工程与系统科学 2024-11-20 Ekaterina Shumitskaya , Mikhail Pautov , Dmitriy Vatolin , Anastasia Antsiferova

Image Quality Assessment algorithms predict a quality score for a pristine or distorted input image, such that it correlates with human opinion. Traditional methods required a non-distorted "reference" version of the input image to compare…

图像与视频处理 · 电气工程与系统科学 2020-07-21 Subhayan Mukherjee , Giuseppe Valenzise , Irene Cheng

While recent advancements in large multimodal models (LMMs) have significantly improved their abilities in image quality assessment (IQA) relying on absolute quality rating, how to transfer reliable relative quality comparison outputs to…

计算机视觉与模式识别 · 计算机科学 2024-05-30 Hanwei Zhu , Haoning Wu , Yixuan Li , Zicheng Zhang , Baoliang Chen , Lingyu Zhu , Yuming Fang , Guangtao Zhai , Weisi Lin , Shiqi Wang

Existing deep network-based full-reference image quality assessment (FR-IQA) models typically work by performing pairwise comparisons of deep features from the reference and distorted images. In this paper, we approach this problem from a…

计算机视觉与模式识别 · 计算机科学 2026-05-29 Zhen Zhang , Jielei Chu , Tian Zhang , Lin Ma , Fengmao Lv , Weide Liu , Tianrui Li , Yuming Fang

In this paper, we introduce an image quality assessment (IQA) method for pediatric T1- and T2-weighted MR images. IQA is first performed slice-wise using a nonlocal residual neural network (NR-Net) and then volume-wise by agglomerating the…

计算机视觉与模式识别 · 计算机科学 2020-05-26 Siyuan Liu , Kim-Han Thung , Weili Lin , Pew-Thian Yap , Dinggang Shen